1 . —The hall for international conferences is of great importance.
—I see, and we are sure to complete it on time.

A．built

B．to be built

C．having been built

D．building

2 . I tried to____________（劝说）him to give up smoking, but he didn't listen. （根据中文提示填空）

3 . After a few days of fever, she began to r___. (根据首字母提示单词拼写)

4 . I am determined to ________（实现我的目标）no matter how hard it is. （根据汉语提示完成句子）